car amp.
hi apex
some questions.?
1. I can use this amp for car.
2. Can be used at 2 ohms.
3. How much power need to give a good performance
It looks pretty good, and a look at a HIFONICS see something similar
90v per rail..
hi apex
some questions.?
1. I can use this amp for car.
2. Can be used at 2 ohms.
3. How much power need to give a good performance
It looks pretty good, and a look at a HIFONICS see something similar
90v per rail..
B500 is based on B250 with add one more pair of outputs and limiter circuit, just use schematic and pcb of B500 with 3 pair outputs and +/-65V rail you get B250.
Regards
You need 500W, 12V to +/-55V DC/DC inverter and you can use B500 for car with 2 ohms load.
Regards
Dear Sir Apexaudio,
To get B250, I will remove (left it blank) a pair of 5200/1943 and two resistors (0R33 5W). Please see attachment. Am I right?
Please Guide me.
Kind Regards
Attachments
Last edited:
hello sir apex, if i remove the NSL32 and i put the LED and 47k it seems like my attachment?....and also i use the treple darlington transistor it seems like my attachment also...pls guide me thanks more power
regads
Attachments
i used 47R for predriver and 4R7/2W for driver transistor it's OK of that value? or which a good value for the triple darlinton driver stage......base on my attachment diagram that is rigth connection of LED and resistor?...pls correct me..
rgads
hello sir
today i use tlo72 step drive bt something is wrong vd me. overdrive positive voltages is no getng stable....pls help me
thanx sir
today i use tlo72 step drive bt something is wrong vd me. overdrive positive voltages is no getng stable....pls help me
thanx sir
i just add an oedinary kit from local store. not very good, but i think its enough 🙂
regard
clipping
hi apex audio
greetings any other clipping ciruit which can be added to added
to any amp nsl 32 is rare to find need for my amp
thanking you
andrew lebon
hi apex audio
greetings any other clipping ciruit which can be added to added
to any amp nsl 32 is rare to find need for my amp
thanking you
andrew lebon
Limiter activate amp output voltage at clip level (or low if you want limit amp under full power) and it atenuate amp input. Clip level voltage is about 5-15V under rail voltage ( rail voltage +/-75V DC, clip level about 65V).
You can adjust limit level with different value of resistors 820R to get 2V in point 820R, 68R whan amp out is on clip level voltage.
Use formula: Rx=Uclip/0,03 or Uclip=0,03XRx
Rx is 3280R (4x820R) in schematic, Uclip is 100V this clip level is for APEX H900 you must use low value for Rx depend of rail voltage or if you want limit amp at low than full power power use formula P=(UrmsXUrms)/Rload, Urms=Uclip/1,4
Regards
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You can adjust limit level with different value of resistors 820R to get 2V in point 820R, 68R whan amp out is on clip level voltage.
Use formula: Rx=Uclip/0,03 or Uclip=0,03XRx
Rx is 3280R (4x820R) in schematic, Uclip is 100V this clip level is for APEX H900 you must use low value for Rx depend of rail voltage or if you want limit amp at low than full power power use formula P=(UrmsXUrms)/Rload, Urms=Uclip/1,4
Regards
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